Envelop for wire coils.



No. 777.395. PATENTED DEC. 18, 1904.

G. BOYLEK; J. MAUM. ENVELOP FOR WIRE OOILS.

APPLICATION FILED MAY 24, 1904.

N0 MODEL.

JZZ/ )2 C. figyle min Patented December 13, 1904.

aTnNT Orricn.

HUGH (J. BOYLE AND JUI-IN MAUh l, OF ELIZABETH, NEW JERSEY.

ENVELOP FUR WIRE lTlClllLS.

SPECIFICATION forming part of Letters Patent No. 777,395, dated December13, 1904.

Application filed May 24, 1904. Serial No. 209,521. (No model.)

To all whom it may concern:

Be it known that we, HUGH 0. Boxes and J OTIN MAUM, citizens of theUnited States, residing at Elizabeth, in the county of Union and Stateof New Jersey, have invented new and useful Improvements in Envelops forWire Coils, of which the following is a specilication.

()ur invention relates to improvements in envelops or covers for wirecoils.

The present invention is designed as an improvement on those certaindevices secured to us by Letters Patent Nos. 744,467 and 746,447, datedNovember 17 and December 8, 1903,1'espectively, for improvements inwire-covers; and the object is to simplify and improve the meansemployed for securing the meeting edges of the envelop when the deviceis in position on the coil of wire. in these prior cited patents alacing is employed in the lirst named to draw and hold together theedges of the envelop about the wire coil, and in theotherradially-arranged straight straps are used for the purpose, whilein the present device the free edges of the envelop are held together bymeans of triangular strips or pieces having their bases secured to oneof the sides of the envelop and straps extending from the points of thepieces to engage buckles secured to the other side of the envelop.

We have fully and clearly illustrated our improvements in the annexeddrawings to be taken as a part of this specification, and refer encebeing thereto had, Figure 1 is a view of the envelop or wire-coverextended, showing the triangular fastening pieces and straps and thebuckles with which they connect. Fig. 2 is a side elevation of theenvelop or cover as it appears when it is secured about a coil of wire.Fig. 2') is a vertical section taken on the line 3 3 of Fig. 2.

In the drawings the same parts appearing in the difl'erent illustrationsare designated by like reference notations, and referring thereto, Adesignates the envelop, cover, or wrapper made of some strong textile orother suitable flexible material and made of such determined capacity asto suit the purpose of completely surrounding a coil of wire to which itmay be applied. In Fig. 1 the envelop is shown as extended and ascomposed of coincident side pieces made up of curved sections 1 2 3,strongly sewed together at their meeting ends and at the back,substantially as indi cated in the drawings, so that when the ends arepositioned in contact a circular tubular casing or envelop will beformed, as seen in Fig. 2 of the drawings. To the free inner edge of oneof the sides of the envelop are secured scalene triangularfastening-strips 4i, adapted to lie diagonally on the opposite side ofthe casiitig, as shown, and thus bind the inner meeting edges together.To the ends or points of the triangular fasteningstrips are securedleather straps 5, which engage with buckles 6, secured to the sideopposite to the one to which the strips 4t are fastened.

By makingthe fastening-strips of scalene triangular shape (shown) abroad base is ohtained for connection to the edge of the en velop, whichcannot be had when buckles and straps are used, and by arranging thebuckles in line with the center of the triangles the pull issubstantially equal at all points of the base, as indicated in thedrawings, thus protecting a com parativelyextended distance of theedges. The ends of the envelop are held tight about the coil by means ofstraps 7, fastened adjacent to the meeting ends of the envelop, as seenin Fig. 2 of the drawings.

It will be observed from Fig. 2 that the straps on the ends of thetriangular strips extend at a tangent with respect to an imaginarycircle within and concentric to that formed by the inner periphery ofthe envelop and that the buckles are in line with the straps. For thisreason when the straps are tightened they have a tendency to contractthe envelop in a circumferential direction, so as to cause it to litmore closely upon the wire coil. Furthermore, it will be observed thatthe trianguh'tr strips 4: are preferably attached to one of thesections, such as 1, and the buckles are preferably attached to theadjacent section, such as 2, this construction being rendered possibleby reason of the tangential relation which the triangular strips andstraps possess, as above noted. For this reason when the straps aretightened they serve not only to contract the envelop, as above setforth, but they also serve to aid the stitching in holding the sectionsof the envelop together.

Having thus described our invention, what we claim is 1. A wire-coilenvelop consisting of sections having scalene triangular strips securedat their bases to the edges of the sections and provided with strapsextending tangentially to an imaginary circle within and concentric tothat formed by the inner periphery of the envelop, said envelop alsohaving sections provided with buckles in line with the straps, wherebythe strap on one section may be engaged with the buckle on the nextadjacent section.

2. The combination with a wire-coil envelop, of fastening meansconsisting of scalene tri-

